Research > Zero-Day Tracker > 20080526
Creative Software AutoUpdate Engine ActiveX stack buffer overflow
The Creative Labs AutoUpdate Engine ActiveX is included by default with many hardware devices that Creative Labs distributes.
The Creative Software AutoUpdate Engine ActiveX control is a component that provides automatic update capabilities to Creative Labs software. This ActiveX control is provided by the file CTSUEng.ocx. The Create Software AutoUpdate Engine ActiveX control is marked Safe For Scripting and Safe For Initialization, which means that a web page in Internet Explorer has the ability to interact with the control. This ActiveX control contains a stack buffer overflow in the CacheFolder property.
Exploit code for this vulnerability is publicly available.
Arbitrary code execution under the context of the logged in user
ActiveX remote code execution vulnerabilities have very high impacts since the source of the malicious payload can be any site on the Internet. An even more critical problem is generated when clients are administrators on their local hosts, which would run the malicious payload with Administrator credentials.
The best form of mitigation is available by kill-bitting the CLSID for the Creative Labs AutoUpdate Engine ActiveX Control (0A5FD7C5-A45C-49FC-ADB5-9952547D5715) following the directions of KB240797. This will disable calls to these ActiveX controls from web pages, thereby mitigating these specific vulnerabilities.
1.2008-5.2008 - Vendor contact attempted by eEye Research and US-CERT
5.26.2008 - US-CERT Advisory Published
5.28.2008 - In-The-Wild Exploitation Witnessed
Copyright ©1998-2011 eEye Digital Security
Permission is hereby granted for the redistribution of this alert electronically. It is not to be edited in any way without express consent of eEye. If you wish to reprint the whole or any part of this alert in any other medium excluding electronic medium, please email alert@eEye.com for permission.
The information within this paper may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are no warranties, implied or express, with regard to this information. In no event shall the author be liable for any direct or indirect damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk.